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Geomagnetic storm on 27 Sep 1940 (G3)

Max Kp7-G3

Ap45No. 18 in 1940

Consecutive G1+ days3

Ap rank1,176since 1932

Kp by 3-hour slot (UTC)

00–037-

03–066-

06–093+

09–123o

12–153o

15–184+

18–215+

21–245o

The days around it

Date	Max Kp	Ap	Level
24 Sep 1940	3-	4	–
25 Sep 1940	4o	22	–
26 Sep 1940	8-	44	G4
27 Sep 1940	7-	45	G3
28 Sep 1940	6-	42	G2
29 Sep 1940	3o	10	–
30 Sep 1940	4o	8	–

Highest-Ap days of 1940

30 Mar 1940189

24 Mar 1940187

25 Mar 1940184

31 Mar 1940128

25 Jun 1940126

29 Mar 1940100

3 Apr 194098

24 May 194078

25 Apr 194070

1 Apr 194066

Dates and time slots are UTC. Kp is the 3-hourly planetary geomagnetic index (0–9); Ap is the daily average disturbance. G1–G5 follow the NOAA storm scale (Kp 5- and above counted as G1). Aurora visibility also depends on weather and location. The latest values are preliminary.

← 26 Sep 1940 1 Oct 1940 →

About this page

Max Kp 7-, Ap 45: No. 1,176 of 34,615 days since 1932 by Ap.